JP7173928B2 - Numerical controller - Google Patents

Description

The present invention relates to numerical controllers.

Numerical controllers that control machine tools also have a function to stop the execution of the program in the middle of the program in order to check the operation of the program.

For example, Patent Literature 1 discloses a function for smooth operation confirmation by suspending program execution immediately after a subprogram call or macro call.

Here, a subprogram is a program in which certain fixed actions or repeated actions are registered. The use of subprogram calls in the main program makes it possible to write programs easily. Also, macro call is a function that enables the specification of arguments for subprograms and realizes calls with higher versatility.

FIG. 5 shows an example of the subprogram calling function. In the main program "O0001 (MAIN)", the subprogram "O100 (SUB)" is called by the "G65P100L2A_B_" block.

FIG. 6 shows an example of the macro call function. In FIG. 6, A1.0 and B2.0 of the G65 block are passed as arguments to O9010 and become variables of macro variable #1 and macro variable #2. A macro call by G65 is called a simple call, and a macro call similar to G65 by a pre-registered G code (not shown) is called a macro call by G code.

Another program stop function is a sequence number collation function. The sequence number matching function is a function that stops automatic operation when a block that matches a preset program number and sequence number is executed.

FIG. 7 shows an example of the sequence number collation stop function. In FIG. 7, if "1" is designated as the program number to be stopped from the unprocessed part of the machining program and "11" is designated as the sequence number to be stopped, "N11G00X40.Y40." When the block is executed, the automatic operation is stopped and the sequence number is set to -1 (function disabled).

JP 2015-79344 A

However, the program stop function disclosed in Patent Document 1 can only handle the first subprogram call. For this reason, in the case of a machining program that calls the subprogram multiple times from the main program to specify the part machining shape in a subprogram and continuously machine a plurality of parts, the Xth part (X is a natural number of 2 or more) In order to stop at the specified N-numbered block after machining, set the above-mentioned sequence number comparison stop function after executing the specified N-numbered block of the (X-1)th part, or use your own sub It was necessary to count the number of program calls and manually set up complicated processing.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a numerical controller capable of stopping automatic operation after machining a specific component without the need to manually modify the machining program or perform macro calculations.

One aspect of the present disclosure is a numerical controller that operates according to a command program, comprising: a program analysis unit that analyzes the command program during execution of the command program for continuously machining a plurality of parts; and a program stop condition for setting a program stop condition in the command program based on a machining stop condition for stopping the continuous machining specified by the user. A setting unit, a program stop determination unit that determines whether an execution block of the command program satisfies the program stop condition based on the analysis result of the command program by the program analysis unit, and the program stop determination unit and a program stop requesting section for outputting a request to stop the execution block of the command program to the analyzed program execution section when it is determined that the execution block of the command program satisfies the program stop condition. is.

According to one aspect, it is possible to stop the automatic operation after machining a specific part without having to manually modify the machining program or perform macro calculations.

It is a figure which shows the structure of the numerical controller of one Embodiment. It is a flow chart which shows the operation of the numerical control device of one embodiment. It is a figure which shows the example of the display screen at the time of multi-cavity component processing in the numerical control apparatus of one Embodiment. FIG. 4 is a diagram showing an example of a display screen and a machining program during machining of a multi-cavity component in the numerical control device of one embodiment; FIG. 10 is a diagram showing an example of a subprogram calling function; FIG. FIG. 4 is a diagram showing an example of a macro call function; FIG. FIG. 10 is a diagram showing an example of a sequence number collation function;

[1. First Embodiment]
A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. FIG. 1 shows the overall configuration of a numerical control device according to the first embodiment. FIG. 2 is a flow chart showing the operation of the numerical controller 1. As shown in FIG.
The numerical control device 1 according to the first embodiment is a device that sets a program stop condition corresponding to a machining stop condition that ends machining at a position where machining has been completed up to a part immediately before the remaining amount of consumables such as wire runs out. .

[1.1 Overall configuration]
As shown in FIG. 1 , the numerical controller 1 includes a command program analysis section 11 , a program stop section 12 , an analyzed program execution section 13 , and a check drawing display section 14 .

Command program analysis unit 11 includes program analysis unit 111 , call determination unit 112 , and call execution unit 113 .
The program analysis unit 111 analyzes the instruction program when the instruction program is executed. In the first embodiment, the program analysis unit 111 analyzes a command program for continuously machining a plurality of parts.
The call determination unit 112 determines macro calls and subprogram calls based on the result of analysis of the instruction program by the program analysis unit 111 .
The call execution unit 113 executes a macro call or subprogram call determined by the call determination unit 112 to be called.

The program stop section 12 includes a program stop condition setting section 121 , a program stop determination section 122 and a program stop request section 123 .

The program stop condition setting unit 121 sets a machining stop condition set by the user. A program stop condition including the number of blocks from the program head to the stop block of the command program corresponding to the machining stop condition is set for the condition.

For example, in the first step, the program stop condition setting unit 121 acquires the remaining wire distance X km recorded in the memory (not shown) of the numerical controller 1 .
In the second step, the program stop condition setting unit 121 acquires the wire distance Y km required for machining one part recorded in the memory of the numerical controller 1 .
In the third step, the program stop condition setting unit 121 calculates the number Z of pieces that can be processed with the remaining wire from the remaining wire distance X km and the wire distance Y km required for processing.
In the fourth step, the program stop condition setting unit 121 sets a stop block (for example, diameter correction end code G40, wire The number of blocks up to the block of the disconnect command M60, etc.) is calculated, and the program stop condition including the number of blocks is set.

The program stop determination unit 122 determines whether or not the execution block of the command program satisfies the program stop condition based on the analysis result of the command program by the program analysis unit 111. If it is determined that the program stop condition is satisfied, the program stop request is issued. It requests the unit 123 to stop the program.

When the program stop requesting unit 123 is requested to stop the program by the program stop determining unit 122 , the program stop requesting unit 123 outputs a command program execution block stop request to the analyzed program executing unit 13 .

Analyzed program execution unit 13 executes the instruction program analyzed by program analysis unit 111 . Particularly in this embodiment, when the analyzed program execution unit 13 acquires an execution block stop request from the program stop request unit 123, it stops execution of the instruction program in the requested block.

The check drawing display unit 14 acquires information for drawing the machining path commanded by the command program from the analyzed program execution unit 13, and displays the machining path on a display device (not shown). The display device may have a touch panel so that the user can select the machining shape of each component by touching the screen of the display device.

The numerical controller 1 also includes general functional blocks such as a functional block for controlling the machine tool, a functional block for communication, and a functional block for accepting user's operations. However, since these general functional blocks are well known to those skilled in the art, illustration and description are omitted.

[1.2 Operation]
FIG. 2 is a flow chart showing the operation of the numerical controller 1. As shown in FIG.
In step S11, the program stop condition setting unit 121 sets a program stop condition.
In particular, in this embodiment, as described above, the program stop condition setting unit 121 determines the number of pieces that can be processed with the remaining wire from the remaining wire distance X km and the wire distance Y km required to process one part. After calculating Z pieces, as a program stop condition, a stop block (for example, G40, which is a code for ending diameter correction, or a block such as M60, which is a wire cutting command) is started from the beginning of the program when the remaining Z pieces of machining are finished. Calculate the number of blocks up to

In step S12, the program stop determination unit 122 determines whether or not the execution block of the command program satisfies the program stop condition, and if it is determined that the condition is met (S12: YES), the process proceeds to step S13. If it is determined not to satisfy (S12: NO), the process proceeds to step S12.

In step S<b>13 , the program stop determination unit 122 requests the program stop request unit 123 to stop the program, and the program stop request unit 123 outputs a command program execution block stop request to the analyzed program execution unit 13 .

[1.3 Effects of the first embodiment]
As described above, the numerical controller 1 of the first embodiment includes a program stop condition setting unit that sets a program stop condition in a command program based on a machining stop condition for stopping continuous machining specified by a user. 121, a program stop determination unit 122 that determines whether or not the execution block of the command program satisfies the program stop condition based on the analysis result of the command program, and a determination that the execution block of the command program satisfies the program stop condition. and a program stop requesting unit 123 for outputting a request for stopping the execution block of the instruction program to the analyzed program execution unit.

This makes it possible to stop automatic operation after machining a specific part without having to manually modify the machining program or perform macro calculations.

Further, if the machining stop condition is a condition that machining ends at a position where machining is finished up to the part just before the consumable used for continuous machining runs out, the program stop condition setting unit 121 outputs a command corresponding to the machining stop condition. Set the program stop condition including the number of blocks from the beginning of the program to the stop block.

As a result, it is possible to prevent the consumption of consumables such as wires from running out during part processing, and to use the consumables without waste.

[2. Second Embodiment]
A second embodiment of the present invention will be described below with reference to FIG. FIG. 3 shows an example of a display screen at the time of multi-cavity part machining provided in the numerical control device 1 according to the second embodiment.

In the numerical control device 1A according to the second embodiment, the user designates a specific position in the processed shape of the unprocessed portion of the check drawing path from the touch panel or the like of the display screen provided in the numerical control device 1A. Set the program stop condition corresponding to the machining stop condition to stop machining.

In the example of the machining path drawing screen for multi-cavity part machining shown in FIG. 3, the machining paths that have been machined are indicated by solid lines and the machining paths that have not yet been machined are indicated by dotted lines. A machined machining path may be indicated by a dotted line, and an unmachined machining path may be indicated by a solid line. A black circle is the starting point of machining, and it is possible to stop machining after machining. A user selects a machining position at which machining is to be stopped from among a plurality of machining shapes.

It should be noted that FIG. 3 shows an example of a machining path drawing screen for drawing a large number of square parts with two rows vertically and five columns horizontally. The machining path up to the second part being machined is indicated by solid lines, and the machining paths of subsequent parts are indicated by dotted lines. Also, when the machining shape of the fifth part is selected, setting is made to stop after machining the fifth part.

Further, the numerical control device 1A according to the second embodiment and the numerical control device 1 according to the first embodiment differ in machining stop conditions and program stop conditions, but have the same configuration. omitted.

[2.1 Machining stop condition]
In this embodiment, the program stop condition setting unit 121 responds to the processing stop condition set by the user, specifically, the processing stop condition for stopping processing at a specified position of the machining shape of the unprocessed portion of the check drawing path. Then, the program stop condition including the number of blocks from the beginning of the program to the stop block when the machining of the predetermined machining shape is completed in the command program corresponding to the machining stop condition is set.

For example, in the first step, the program stop condition setting unit 121 calculates the number of the processed shape when the user designates the processed shape of the unprocessed portion of the check drawing path on the touch panel. As a result, it is assumed that the X-th machining shape is calculated.
In the second step, the program stop condition setting unit 121 sets a stop block (diameter correction end G40, wire cutting command M60, etc.) from the beginning of the program when machining of the Xth machining shape is completed, as a program stop condition. block).

[2.2 Effects of Second Embodiment]
As described above, when the machining stop condition is a condition to stop machining at a specified position of the machining shape of the unmachined portion of the check drawing path, the program stop condition setting unit 121 sets the program corresponding to the machining stop condition. , program stop conditions including the number of blocks from the beginning of the program to the stop block when machining of a predetermined machining shape is completed are set.

As a result, there is no need to repeat restart and automatic operation stop many times to stop machining at a desired location, and the operator does not need to check the machining status repeatedly until machining is completed to the desired stop location. do not have.

[3. Third Embodiment]
A third embodiment of the present invention will be described below with reference to FIG. FIG. 4 shows an example of a display screen and a machining program at the time of multi-cavity part machining in the numerical controller 1B according to the third embodiment.

The numerical control device 1B according to the third embodiment sets a program stop condition equivalent to a machining stop condition for finishing machining at the position of the N number when a specific N number appears a specified number of times in the machining program. . For example, if the specified number of times is 2 and the specific N number is N11, when the block of N11 is executed for the first time in the machining program, the execution of the program is not stopped, and when N11 appears for the second time stop program execution at

[3.1 Machining stop condition]
Referring to FIG. 4, for the machining stop condition set by the user, for example, the machining stop condition for stopping the execution of the program at block N11 during the 1st machining of the fifth part while the second part is being machined. , the program stop condition setting unit 121 calculates the remaining number of times of the N11 block and sets the number of times of the N-numbered block as the stop condition so as to stop at the N11 block next to the N11 block in the final machining of the fourth part. .

[3.2 Effect of Third Embodiment]
As described above, when the machining stop condition is a condition to stop machining at the specified number of N-numbered blocks in continuous machining, the program stop condition setting unit 121 stops at the specified number of N-numbered blocks. A stop condition is set to stop at a specified number of N-numbered blocks from the beginning.

As a result, it is possible to specify and stop the Y-th machining (for example, the first finish machining, etc.) of the X number of parts. Conventionally, in order to stop machining at a specified N-numbered block after the Y-th machining of the X-th part, after executing the (Y-1)th specified N-numbered block of the X-th part, the sequence number is collated. Although it was necessary to set a stop function, in this embodiment, it becomes possible to set a program stop condition before machining.

[4. Fourth Embodiment]
A fourth embodiment of the present invention will be described below.

The numerical control device 1C according to the fourth embodiment, when a specific N number appears a specified number of times in the machining program, skips this N number and satisfies the machining stop condition of stopping machining at the position of the next N number. Set the corresponding program stop condition.

[4.1 Machining stop condition]
Referring to FIG. 4, the processing stop condition set by the user, for example, while the second part is being processed, the N11 block for the 1st machining of the fifth part is skipped, and the program is executed in the next N11 block. , the program stop condition setting unit 121 calculates the number of blocks from the beginning of the program so as to stop at the N11 block next to the N11 block in the 1st machining of the fifth part, Set the program stop condition including this number of blocks. Instead of calculating the number of blocks from the beginning of the program, the numerical controller may be provided with a variable for counting the number of N11 blocks, and the conditions for stopping or not may be compared.

[4.2 Effects of Fourth Embodiment]
As described above, in the case where the machining stop condition is a condition to skip N-numbered blocks a specified number of times in continuous machining and finish machining at the next N-numbered block, the program stop condition setting unit 121 sets the specified number of times. A program stop condition including the number of blocks from the beginning of the program for skipping the N-numbered block and stopping at the next N-numbered block is set.

As a result, it is possible to designate and stop the next machining after the Y-th machining of the X part (for example, the first finishing machining). Conventionally, in order to stop machining at the specified N-numbered block after the Y+1th machining of the Xth part, the sequence number comparison stop function is set after the Yth specified N-numbered block of the Xth part is executed. However, in this embodiment, it is possible to set the program stop condition before machining.

Note that in the first to fourth embodiments, the setting of the program stop condition is not limited to the case where a subprogram or the like is called. For example, it is applicable even when there is no subprogram and only the main program.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. Moreover, the effects described in the present embodiment are merely enumerations of the most suitable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the present embodiment.

1, 1A, 1B, 1C numerical controller 11 instruction program analysis unit 12 program stop unit 13 analyzed program execution unit 14 check drawing display unit 111 program analysis unit 112 call determination unit 113 call execution unit 121 program stop condition setting unit 122 program Stop determination unit 123 Program stop request unit

Claims (5)

A numerical control device that operates according to a command program,
a program analysis unit that analyzes the command program when executing the command program for continuously machining a plurality of parts;
an analyzed program execution unit that executes the instruction program analyzed by the program analysis unit;
a program stop condition setting unit that sets a program stop condition in the command program based on a machining stop condition for stopping the continuous machining specified by a user;
a program stop determination unit that determines whether an execution block of the command program satisfies the program stop condition based on the analysis result of the command program by the program analysis unit;
a program stop requesting unit for outputting a request to stop the execution block of the command program to the analyzed program execution unit when the program stop determination unit determines that the execution block of the command program satisfies the program stop condition; ,
A numerical controller comprising If the machining stop condition is a condition that machining is stopped at a position where machining is completed up to a part immediately before the remaining consumables used in the continuous machining run out, the program stop condition setting unit corresponds to the machining stop condition. 2. The numerical controller according to claim 1, wherein a program stop condition including the number of blocks from the program head of said command program to a stop block is set. When the machining stop condition is a condition to stop machining at a specified position of the machining shape of the unmachined portion of the check drawing path, the program stop condition setting unit sets the command program corresponding to the machining stop condition to a predetermined 2. The numerical controller according to claim 1, wherein a program stop condition is set including the number of blocks from the beginning of the program to the stop block when machining of the machined shape is finished. If the machining stop condition is a condition to stop machining at N-numbered blocks of a specified number of times in the continuous machining, the program stop condition setting unit sets a stop condition for stopping at N-numbered blocks of the specified number of times. , The numerical controller according to claim 1. If the machining stop condition is a condition to skip the N-numbered block specified times in the continuous machining and finish machining at the next N-numbered block, the program stop condition setting unit skips the N-numbered block specified times. 2. The numerical controller according to claim 1, which sets a stop condition for skipping and stopping at the next N-numbered block.

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